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Technical Data Sheet
PartsTable / MRO / 1N5231B
1N5231B ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
SR = Short Range (multimode, 300m) | LR = Long Range (single-mode, 10km) DOM = Digital Optical Monitoring — most enterprise SFPs support it
MATCH ALL THREE: Speed + Wavelength + Brand compatibility
PRODUCT OVERVIEW

The CAPACITOR,FIXED,ELECTROLYTIC is a the manufacturer cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include material: GLASS ENCLOSURE, body_style: W/O MTG FACILITIES, AXIAL TERMINALS, body_length: 0.828 INCHES MAXIMUM IN, body_diameter: 0.390 INCHES NOMINAL IN, overall_length: 0.120 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN, mounting_method: BRACKET(S). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-437-6394, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MRO→ MRO_GENERAL→ 1N5231B
NSN: 5961-00-437-6394
FSC: 5961
CAGE: 04713 — FREESCALE SEMICONDUCTOR, INC. (USA)
SPECIFICATIONS
materialGLASS ENCLOSURE
body_styleW/O MTG FACILITIES, AXIAL TERMINALS
body_length0.828 INCHES MAXIMUM IN
body_diameter0.390 INCHES NOMINAL IN
overall_length0.120 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
mounting_methodBRACKET(S)
terminal_length1.000 INCHES MINIMUM IN
overall_diameter0.055 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN
features_providedHERMETICALLY SEALED CASE
terminal_diameter0.025 INCHES NOMINAL IN
reliability_indicatorNOT ESTABLISHED
special_test_featuresTESTED PER BASE TEN SYSTEMS DWG 21917
NSN5961-00-437-6394
COMPONENT DIAGRAM
BAIL LATCH 10G SFP+ 850nm · SR (MMF, 300m) DOM: Digital Optical Monitoring TX RX LC DUPLEX 20-PIN EDGE CONNECTOR ~56.5 mm ~13.4mm SFP+ TRANSCEIVER | 10G | 850nm | SR (MMF, 300m) Hot-swappable | LC duplex fiber | DDM/DOM supported TITLE SFP+ XCVR PN 1N5231B MFR OEM CAPACITOR,FIXED,ELECTROLYTIC
KEY FEATURES
•
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC: 5.1 MAXIMUM NOMINAL REGULATOR VOLTAGE
•
TERMINAL LENGTH: 1.000 INCHES MINIMUM IN
•
CURRENT RATING PER CHARACTERISTIC: 20.00 MILLIAMPERES MAXIMUM MAXIMUM REVERSE SURGE CURRENT
•
OVERALL DIAMETER: 0.085 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN
•
POWER RATING PER CHARACTERISTIC: 500.0 MILLIWATTS MAXIMUM TOTAL POWER DISSIPATION
•
MOUNTING METHOD: TERMINAL
•
JOINT ELECTRONIC DEVICE ENGINEERING COUNCIL/JEDEC/CASE OUTLINE DESIGNATION: D0-7
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC5.1 MAXIMUM NOMINAL REGULATOR VOLTAGE
OVERALL LENGTH0.230 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
TERMINAL LENGTH1.000 INCHES MINIMUM IN
CURRENT RATING PER CHARACTERISTIC20.00 MILLIAMPERES MAXIMUM MAXIMUM REVERSE SURGE CURRENT
OVERALL DIAMETER0.085 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN
POWER RATING PER CHARACTERISTIC500.0 MILLIWATTS MAXIMUM TOTAL POWER DISSIPATION
MOUNTING METHODTERMINAL
JOINT ELECTRONIC DEVICE ENGINEERING COUNCIL/JEDEC/CASE OUTLINE DESIGNATIOND0-7
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT200.0 CELSIUS AMBIENT AIR DEGC
FEATURES PROVIDEDHERMETICALLY SEALED CASE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
HC365SSCATCHInterchangeable
interchangeable cross-reference
interchangeable
10110-3Interchangeable
interchangeable cross-reference
interchangeable
A147Interchangeable
interchangeable cross-reference
interchangeable
109D567X902572Interchangeable
interchangeable cross-reference
interchangeable
40EW567C025K1AInterchangeable
interchangeable cross-reference
interchangeable
2N3468Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1N5231B?
1N5231B is a CAPACITOR,FIXED,ELECTROLYTIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace 1N5231B?
There are 24 known substitutes for 1N5231B: HC365SSCATCH, 10110-3, A147 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1N5231B?
1N5231B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-437-6394. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026